Bump level to 1.5a2.
diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index bfaca3b..460a27f 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -1 +1 @@
-#define PATCHLEVEL "1.5a1"
+#define PATCHLEVEL "1.5a2"